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Finding the Fourth Proportional to 316,780.85, 437,188.95 and 180,835.23

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Solution

The fourth proportional to 316,780.85, 437,188.95 and 180,835.23 is: 249,570.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,780.85 : 437,188.95 = 180,835.23 : x
  2. Step 2: Convert to fraction form
    316,780.85/437,188.95 = 180,835.23/x
  3. Step 3: Cross multiply
    316,780.85x = 437,188.95 × 180,835.23
  4. Step 4: Simplify right side
    316,780.85x = 79,059,164,326.71
  5. Step 5: Solve for x
    x = 79,059,164,326.71/316,780.85
  6. Step 6: Final answer
    x = 249,570.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.